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Fuji Ultrasonic Flow Meter Manual PDF: Quick Programming Guide for Digital Signals and Totalizers
Quick Answer: The Fuji ultrasonic flow meter manual PDF covers digital output programming, pulse output setup, totalizer scaling, and Modbus register mapping. Most users can set a pulse output and totalizer in less than 15 minutes after reading the relevant menu section. If you need a replacement ultrasonic flow meter or a cross reference for Fuji models, send your pipe size, flow range, and signal type to Silver Instruments.
Silver Instruments supports many industrial sites that run Fuji ultrasonic flow meters. We often help field engineers configure digital signals and totalizers. This guide gives you a fast path through the manual PDF without reading all 150 pages. In practice, most programming errors come from two places. The first is pulse units. The second is totalizer decimal scaling.
Common Digital Signal Types on Fuji Ultrasonic Flow Meters
Fuji ultrasonic flow meters usually provide one or more open collector digital outputs. Some models have relay outputs. You can set the output mode to pulse, alarm, or totalizer pulse. The manual PDF will refer to these as DO1, DO2, or DO3 depending on the model. Each digital output has a pulse width setting. Typical pulse widths range from 1 ms to 500 ms. For PLC counters, set the pulse width above 20 ms. This avoids missing fast pulses on long cable runs.
Totalizer Programming Steps
First open the programming menu. Enter the access code if the meter is password protected. The default code for many Fuji ultrasonic flow meter models is 0000 or 1000. Check your manual PDF because some regional versions use a different default. Then go to the totalizer menu. Select the engineering unit. Common units are m3, L, kg, or ton. Set the totalizer factor if you need mass units. The meter calculates mass from volume and density or from an entered density value.
After selecting the unit, set the low flow cutoff. This stops the totalizer from counting during zero flow conditions. A typical low flow cutoff is 0.03 m/s. For cooling water lines with vibration, you may need 0.05 m/s. Then review the totalizer decimal point. This is the setting that causes confusion on site. If your totalizer increments by 10 m3 but you expected 0.1 m3, check the decimal point and the totalizer multiplier.
Most engineers skip this part. We have seen this on customer sites many times. Last year a customer in Vietnam had a Fuji ultrasonic meter on a chilled water line. The totalizer would not count because the low flow cutoff was set to 0.5 m/s. The normal velocity was only 0.4 m/s during low load. Reducing the cutoff to 0.03 m/s solved the problem.
Digital Output Wiring and Load Resistors
Open collector outputs need an external DC power supply. Most Fuji
Cross Reference and Replacement Options
Fuji ultrasonic flow meters are reliable but old units sometimes lose display contrast or fail on the keypad. Silver Instruments supplies replacement clamp on ultrasonic flow meters with 4-20 mA HART, RS485 Modbus, and digital pulse outputs. We have supplied these for water treatment plants in Vietnam, a food factory in the Philippines, and a desalination project in the Middle East. If your Fuji meter is beyond repair, send us the model code, pipe size, fluid type, and temperature. We will propose a drop in replacement with similar digital signal behavior.
FAQ
Question 1: Where can I download the Fuji ultrasonic flow meter manual PDF?
Contact your local Fuji Electric distributor or use the model code printed on the nameplate. Silver Instruments also keeps reference copies for common Fuji ultrasonic flow meter models and can send a PDF during technical support.
Question 2: Why does my totalizer not count even when flow is displayed?
Check the low flow cutoff setting. If the flow rate is below the cutoff value, the totalizer will not increment. Also confirm that the totalizer function is enabled in the digital output menu.
Question 3: How do I reset the Fuji ultrasonic flow meter totalizer to zero?
Most Fuji models allow a keypad reset from the totalizer display screen. Some models support a remote reset through a digital input. The manual PDF will show the reset method under the totalizer operation section.
Question 4: What pulse output setting should I use for a PLC counter?
Set the pulse width between 20 ms and 100 ms. Choose a pulse value that gives a readable frequency. For a DN100 pipe with 50 m3/h flow, a pulse value of 0.1 m3 per pulse gives about 139 pulses per hour. That is too slow for some totalizing applications. Use 0.01 m3 per pulse if the PLC counter supports higher frequency.
Question 5: Can Silver Instruments help configure a Fuji ultrasonic flow meter?
Yes. Send us the model, pipe size, fluid, flow range, and the signal type your PLC or SCADA needs. Contact Silver Instruments. Tel: +86-25-68650347. WhatsApp: +86-25-52155837. WeChat: +86 15365082610.
Send your pressure, temperature, pipe size, and flow range to Silver Instruments to get a quote for a new ultrasonic flow meter or a consultation on Fuji digital signal programming. We respond within 24 hours on working days.
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